Return object instead of string for FK field in SerializerMutation in Graphene Django

[thomas-arun]

I have two models ProjectType and Project as follows

class ProjectType(Base):
    name = models.CharField(max_length=100, unique=True)

    class Meta:
        db_table = 'project_types'

    def __str__(self):
        return self.name


class Project(Base):
    name = models.CharField(max_length=100, unique=True)
    project_type = models.ForeignKey(ProjectType, on_delete=models.DO_NOTHING, related_name='related_projects')

    class Meta:
        db_table = 'projects'

    def __str__(self):
        return self.code

and I have Mutations for both using SerializerMutation from Grapehene Django

class ProjectTypeMutation(SerializerMutation):
    class Meta:
        serializer_class = ProjectTypeSerializer
        model_operation = ['create', 'update']


class ProjectMutation(SerializerMutation):
    class Meta:
        serializer_class = ProjectSerializer
        model_operation = ['create', 'update']


class Mutation(graphene.ObjectType):
    cudProjectType = ProjectTypeMutation.Field()
    cudProject = ProjectMutation.Field()

When I perform a create mutation for project, I have to also specify the project_type. The resulting response also has the project_type but as a String. Not an object. Is there any way to get project_type back as an object?

Current Mutation ⬇️

mutation{
  cudProject(input: {name: "Project1" project_type: "1"}) {
    id
    name
    project_type
  }
}

Current Output ⬇️

{
  "data": {
    "cudProject": {
      "id": 200,
      "name": "Project1",
      "project_type": "1"
    }
  }
}

The Solution I would Like

I want project_type to be an object which I can use as follows:

Expected Mutation Request ⬇️ (This brings an error currently)

mutation{
  cudProject(input: {name: "Project1" project_type: "1"}) {
    id
    name
    project_type{
      id
      name
  }
}

Expected Output ⬇️

{
  "data": {
    "cudProject": {
      "id": 200,
      "name": "Project1",
      "project_type": {
         "id": 1,
         "name": "ProjectType1"
    }
  }
}

Is this the default way that is expected from Graphene Django or am I doing something wrong? Any way to do this using SerializerMutation or any other way in Graphene Django?

Or if there is a better way to have Create, Update, Delete Mutations implemented in Graphene Django?